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Old 09-25-2008, 09:16 AM   #1
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Painting masonie siding and substance is forming?

I used to paint for college pro back in the day but I really don't know much about paint and or siding. I am pretty sure the house was painted before however I don't know what kind of paint was used. I used Sherwin Williams Duration latex paint on masonite siding with a 5" woodscapes brush. I put two coats on because the first one didn't totally cover - which is an issue in itself because I never had to use 2 coats using duration paint before - and I have this substance forming. It's not dripping paint, its a weird subtance. When you rub it with your fingers it doesn't feel like water or oil, you can feel it on your fingers for a couple seconds and it goes away. Rubbing it with a towel seems to help a little bit the majority of the house that gets sun has this problem and it would take a long time to wipe down half of my house. I didn't notice this issue befoe I painted. Any ideas on what this stuff is, what caused it, and what I can do to fix it. Images are attached.
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Painting masonie siding and substance is forming?-img_0851.jpg   Painting masonie siding and substance is forming?-img_0849.jpg  


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Old 09-25-2008, 09:42 AM   #2
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That is odd...have you contacted your local paint source to inquire with them? Insist on an on-site visit, they'll probably try to say the surface wasn't prepped correctly, but they should be able to at least tell you what's going on. I doubt calling the SW support number would help...but it might be worth a shot -- 1-800-4-SHERWIN


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Old 09-25-2008, 10:35 AM   #3
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If that was, say, a bathroom, I would guess surfectant leeching... Can't say I've seen anybody here report it on an exterior, though I can't think of any reason why it wouldn't happen. I agree that the solution is to get someone from Sherwin over there to figure it out.

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Old 09-25-2008, 05:32 PM   #4
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That is surfactant leeching

Interesting enough SirWired, it's been traditionally more common outside
It's really only (relatively) lately that paint manufacturers have been loading up on the surfactants, and changing the formulas, and that it's been pretty common indoors

It's usually too much moisture, either on the substrate or during or shortly after application, or low night temps and condensation
It could be cheap or improperly mixed paint, but Duration is good stuff

As it's exterior I'd just wash it off...or it should weather off if you wait
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Old 09-25-2008, 06:38 PM   #5
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Yep, as advised above...


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Old 09-25-2008, 08:24 PM   #6
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Yep, that's exactly what it is. I have had that happen before and it was cold the night before and it hit the dew point. We painted the wall right before dark and the paint didn't have a chance to dry enough.
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Old 10-04-2008, 12:41 AM   #7
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Hmmm!!! Looks like ghost ooze to me. Who Ya Gonna Call? Sherwin Williams or GHOST BUSTERS. :O)


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